gh-132578: Add news blurb to Library and fix test layout spacing

Vaibhav-S-Gowda · Vaibhav-S-Gowda · commit 81e7a6c2a830 · 2026-05-24T01:41:20.000+05:30
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
@@ -2862,7 +2862,7 @@ def run(self):
         t = CustomThread()
         t.start()
         t.join()
-        
+
         # Assert that our custom handle parameter was preserved and did not break the thread run lifecycle
         self.assertEqual(t._handle, "custom_third_party_handle_value")
 
diff --git a/Misc/NEWS.d/next/Library/2026-05-24-01-30-00.gh-issue-132578.aBcDeF.rst b/Misc/NEWS.d/next/Library/2026-05-24-01-30-00.gh-issue-132578.aBcDeF.rst
@@ -0,0 +1 @@
+Add a regression test to ensure that custom user-defined subclasses of threading.Thread can safely define or override a custom _handle attribute without colliding with internal state-tracking implementations.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Add a regression test to ensure that custom user-defined subclasses of threading.Thread can safely define or override a custom _handle attribute without colliding with internal state-tracking implementations.`